$sub-img-size:80px;
.img-con{
    position: relative;
    width:$sub-img-size;
    height:$sub-img-size;
    float:left;
    margin-left:10px;
    border:1px solid #ccc;
    position: relative;
    .img{
        width:100%;
        height:100%;
        display: block;
    }
    .fa-close{
        position: absolute;
        top:0;
        bottom: 0;
        left: 0;
        right:0;
        cursor:pointer;
        display:none;
        font-size:50px;
        color:#ccc;
        background: rgba(0,0,0,.2);
        text-align: center;
        height: $sub-img-size;
        line-height: $sub-img-size;
    }
    &:hover{
        .fa-close{
            display: block;
        }
    }
    
}
.margin-top{
    margin-top: 20px;
}